检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

近视人群原发性开角型青光眼相关因素研究

国际眼科杂志 2008年第2期8卷 398-399页

作者：杨问学田莹朱秀萍高伟中国陕西省西安市第一医院眼科 710002

目的:分析眼轴长度、中央角膜厚度与眼压的关系,探讨它们对原发性开角型青光眼(POAG)的诊断意义。方法:对118例210眼早期原发性开角型青光眼患者以及58例116眼对照组(根据屈光度的不同分为正视组,低中度近视组和高度近视组3组)进行中央... 详细信息

目的:分析眼轴长度、中央角膜厚度与眼压的关系,探讨它们对原发性开角型青光眼(POAG)的诊断意义。方法:对118例210眼早期原发性开角型青光眼患者以及58例116眼对照组(根据屈光度的不同分为正视组,低中度近视组和高度近视组3组)进行中央角膜厚度,眼轴长度,眼压测量,并用统计学的方法对其结果进行比较。结果:正常组中央角膜厚度,眼轴长度与眼压呈正相关关系(r1=0.351,r2=0.883)。两组人群比较,中央角膜厚度、眼轴长度均有极显著性差异(P<0.01);而在同一组内不同屈光度比较,中央角膜厚度随着屈光度的增加而降低;眼轴长度随着屈光度的增加而增加。结论:了解近视人群的特点,有利于提高临床医师对近视合并POAG的早期诊断水平。

关键词：近视原发性开角型青光眼角膜厚度轴长

A New Bisesquiterpene from Ligularia macrophylla

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2002年第3期13卷 249-250页

作者： Bo FU Qi xiu zhu xiu ping YANG Zhong Jian JIA Department of Chemistry Lanzhou UniversityLanzhou 730000

From the roots of Ligularia macrophylla, a bisesquiterpene, ligumacrophyllal was isolated and its structure was elucidated on the basis of spectroscopic methods.

关键词： Ligularia macrophylla Compositae bisesquiterpene ligumacrophyllal.

Research progress in interface modification and thermal conduction behavior of diamond/metal composites

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 200-211页

作者： ping zhu pingping Wang Puzhen Shao xiu Lin Ziyang xiu Qiang Zhang Equo Kobayashi Gaohui Wu School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology School of Material Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Industrial Technology Research Institute of Heilongjiang Province Harbin 150001China Department of Materials Science and Engineering Tokyo Institute of TechnologyTokyo 152-8550Japan

Diamond/metal composites are widely used in aerospace and electronic packaging fields due to their outstanding high thermal conductivity and low ***,the difference in chemical properties leads to interface incompatibility between diamond and metal,which has a considerable impact on the performance of the *** improve the interface compatibility between diamond and metal,it is necessary to modify the interface of *** paper reviews the experimental research on interface modification and the application of computational simulation in diamond/metal *** computational simulation with experimental methods is a promising way to promote diamond/metal composite interface modification research.

关键词： diamond/metal interface modification thermal conductivity computational simulation

板层角膜移植联合自体角膜瓣填垫治疗边缘性角膜穿孔

在线全文

学校读者我要写书评

暂无评论

国际眼科杂志 2008年第11期8卷 2254-2255页

作者：马挺汪玲朱斌良张长宁吴洁朱秀萍中国陕西省西安市第一医院眼科 710002

目的:探讨用自体角膜瓣封闭角膜穿孔,联合板层角膜移植治疗边缘性角膜溃疡穿孔的临床疗效。方法:对17例(17眼)不同病因引起的边缘性角膜溃疡穿孔患者行自体角膜瓣填垫及板层角膜移植,术后对植片愈合、虹膜前粘连、继发青光眼、视力、免... 详细信息

目的:探讨用自体角膜瓣封闭角膜穿孔,联合板层角膜移植治疗边缘性角膜溃疡穿孔的临床疗效。方法:对17例(17眼)不同病因引起的边缘性角膜溃疡穿孔患者行自体角膜瓣填垫及板层角膜移植,术后对植片愈合、虹膜前粘连、继发青光眼、视力、免疫排斥反应进行观察。结果:随访3～12(平均6)mo,所有患者植片透明,未见排斥反应,层间积液2例至术后1mo吸收,前房轴深正常,虹膜粘连于角膜穿孔处3例,无继发青光眼。随访>3mo,视力较术前提高12眼,无进步5眼。结论:板层角膜移植联合自体角膜瓣填垫是治疗边缘性角膜穿孔的有效方法。

关键词：角膜瓣板层角膜移植术角膜穿孔

在线全文

学校读者我要写书评

暂无评论

儿童穿透角膜移植50例临床研究

国际眼科杂志 2007年第3期7卷 825-826页

作者：马挺程燕银勇吴洁张长宁朱炳良朱秀萍中国陕西省西安市第一医院西安市眼科医院 710002

目的:探讨儿童穿透角膜移植的治疗及如何提高治愈率的问题。方法:对50例因各种原因所致角膜混浊儿童的54眼进行穿透角膜移植,术后随访6～18mo。结果:移植片透明率为80%(43/54)。术后38例患者裸眼视力有不同程度的提高。结论:在提高视力... 详细信息

目的:探讨儿童穿透角膜移植的治疗及如何提高治愈率的问题。方法:对50例因各种原因所致角膜混浊儿童的54眼进行穿透角膜移植,术后随访6～18mo。结果:移植片透明率为80%(43/54)。术后38例患者裸眼视力有不同程度的提高。结论:在提高视力,预防弱视和完善视觉发育方面,儿童穿透角膜移植有重要意义。尽管儿童术后效果较成人差,但有重要的临床及社会意义。

关键词：儿童穿透性角膜移植

rhPEDF体外活性及抑制大鼠角膜新生血管的作用

在线全文

学校读者我要写书评

暂无评论

国际眼科杂志 2009年第12期9卷 2283-2285页

作者：王亚妮刘先宁朱秀萍安娜杨晓钊杨华张红兵中国陕西省西安市第一医院陕西省眼科研究所 710002

目的:探讨重组人色素上皮细胞衍生因子(recombinant human pigmentepithelium-derived factor,rhPEDF)的体外生物学活性及其抑制大鼠角膜新生血管的作用及机制。方法:建立鸡胚脲囊膜(chick chorioallantoic membrane,CAM)模型,光镜下观察rhPEDF对正常鸡胚脲囊膜微血管形态及数目的影响。照体外实验,给大鼠角膜碱烧伤模型10mol/L rhPEDF后,进行裂隙灯显微镜观察,并定量分析角膜新生血管面积;采用组织病理学检查,比较对照组与用药组的变化。结果:光镜下可见,0.4μg/L rhPEDF对新生血管有显著抑制作用(P<0.01),鸡胚脲囊膜微血管数减少,并且管径变细。大鼠实验组角膜新生血管较对照组3,7,14d没有显著变化。结论:rhPEDF具有抑制新生血管的生物学活性。由于角膜新生血管形成机制的复杂性,应用于角膜新生血管的治疗还需要进一步深入研究。

关键词：角膜新生血管重组人色素上皮衍生因子鸡胚脲囊膜

Effect of Sb dopant amount on the structure and electrocatalytic capability of Ti/Sb-SnO_2 electrodes in the oxidation of 4-chlorophenol

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2007年第11期19卷 1380-1386页

作者： KONG Jiang-tao SHI Shao-yuan zhu xiu-ping NI Jin-ren Key Laboratory of Water and Sediment Sciences Ministry of Education of China Department of Environmental Engineering Peking University Beijing 100871 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China

Ti/Sb-SnO2 anodes were prepared by thermal decomposition to examine the influence of the amount of Sb dopant on the structure and electrocatalytic capability of the electrodes in the oxidation of 4-chlorophenol. The physicochemical properties of the Sb-SnO2 coating were markedly influenced by different amounts of Sb dopant. The electrodes, which contained 5% Sb dopant in the coating, presented a much more homogenous surface and much smaller mud-cracks, compared with Ti/Sb-SnO2 electrodes containing 10% or 15% Sb dopant, which exibited larger mud cracks and pores on the surface. However, the main microstructure remained unchanged with the addition of the Sb dopant. No new crystal phase was observed by X-ray diffraction （XRD）. The electrochemical oxidation of 4-chlorophenol on the Ti/SnO2 electrode with 5% Sb dopant was inclined to electrochemical combustion; while for those containing more Sb dopant, intermediate species were accumulated. The electrodes with 5% Sb dopant showed the highest efficiency in the bulk electrolysis of 4-chlorophenol at a current density of 20 mA/cm^2 for 180 min; and the removal rates of 4-chlorophenol and COD were 51.0% and 48.9%, respectively.

关键词： 4-chlorophenol cyclic voltammogram electrochemical oxidation Sb dopant Ti/Sb-SnO2 electrode

Electrochemical behavior of different shelled microcapsule composite copper coatings

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2011年第3期18卷 377-384页

作者： xiu-qing Xu Yan-hong Guo Wei-ping Li Li-qun zhu School of Materials Science and Engineering Beihang University Beijing 100191 China

Copper/liquid microcapsule composite coatings with polyvinyl alcohol （PVA）, gelatin or methyl cellulose （MC） as shell materials were prepared by electrodeposition. The influence of shell materials on the corrosion resistance of the composite coatings in 0.1 M H2SO4 was investigated by means of electrochemical techniques, scanning electron microscopy （SEM）, and energy dispersion spectrometry （EDS）. The results show that the participation of microcapsules can enhance the corrosion resistance of the composite coatings compared with the traditional copper layer. Based on the analysis of electrochemical test results, the release ways of microcapsules were deduced. Gelatin and MC as the shell materials of microcapsules are easy to release quickly in the composite coating. On the contrary, the releasing speed of PVA microcapsules is relatively slow due to their characteristics.

关键词： composite coatings shell materials copper microcapsules electrochemical properties corrosion resistance electrodeposition

山莨菪碱滴眼液对兔眼睫状肌及视网膜血流的影响

在线全文

学校读者我要写书评

暂无评论

国际眼科杂志 2008年第11期8卷 2219-2220页

作者：王养正肖湘华潘士印朱秀萍陕西省眼科研究所西安市第一医院眼科中国陕西省西安市710002

目的:研究山莨菪碱滴眼液对家兔眼睫状肌松弛和视网膜血流变化的作用,以探讨其防治近视的机制。方法:建立家兔离体睫状肌收缩模型,观察山莨菪碱滴眼液对乙酰胆碱诱导的收缩睫状肌的松弛作用;采用多普勒观察山莨菪碱滴眼液滴眼对家兔视... 详细信息

目的:研究山莨菪碱滴眼液对家兔眼睫状肌松弛和视网膜血流变化的作用,以探讨其防治近视的机制。方法:建立家兔离体睫状肌收缩模型,观察山莨菪碱滴眼液对乙酰胆碱诱导的收缩睫状肌的松弛作用;采用多普勒观察山莨菪碱滴眼液滴眼对家兔视网膜血流的影响。结果:山莨菪碱滴眼液对乙酰胆碱诱导的睫状肌收缩具有松弛作用;能够增加视网膜中央动脉收缩期和舒张期的血流,降低血管阻力指数。结论:山莨菪碱滴眼液通过松弛睫状肌,改善视网膜血循环发挥防治近视的作用。

关键词：山莨菪碱滴眼液睫状肌视网膜血液循环